Centrifugal separator



(No Model.)

A. D. BE'LLINGER-- GBNTRIPUGAL SBPARATOR.

Patnt'ed May 16; 1882'.

Nol 257,841"

N, PEIERSA Pnula-Limngpher. washinmn. D. t:4

UNITED STATES PATENT GFEICE.

ALBERT D. BELLINGEE, or MINNEAPOLIS, MINNESOTA.'

CENTRIFUGAI. SEPARATOR.'

SPECIFICATION forming part or Letters Patent No. 257,841, dated May 16, 1882.

v Application filed January 24, 1882. (No model.) 4

To all 'whom it may concern:

Be it known that I, ALBERT DELLoss BEL- LiNGER, a citizen ot' the United States, and a 'resident of Minneapolis, in the county ofHennepin and State of Minnesota, have made cer tain'new and useful Improvements in `Centrifugal Separators, of which thc following is a specification.

This invention relates to machines for separating the particles of middlings and flour from thebran which cling together too tenaciously for ordinary reels or screens to disengage; and it consists in the construction and mechanism hereinafter specied a-nd claimed.

I attain my proposed object by means of the mechanism illustrated by the accompanying drawings, in which- Figure l is a cross-sectional elevation, and Fig. 2l`is a longitudinal sectional elevation; Fig. 3 is an enlarged sectional Vdetached view of a portion of the beater-armed lining, illus-I trating its construction. Fig. 4 is a similar view of the bolting-clo'th covering of the sides ofthe reel.V Fig. 5 is an outline view of a portion of the reel and casing, showing a variation in the construction.

A is the frame, supporting in suitable hangers or brackets, a a2, a horizontal shaft, B, and provided. with heads C C2, incliniug inward at their bottoms to form ends for the sides U2 G4, and casing for a screw-conveyer, C.

C5 is a flat top, and D D2 inclined hinged doors, and E E2 removable sides, these three parts last named enabling the interior of the case to be exposed by their removal.

F F2 are two circular heads,.secured aroundthe shaft B against the interior of the heads C. C2, and connected to each other by longitudinal bars or ribs G G2 H H2, the inner surfaces of the ribs being even with the outer edges of the heads F F2, as shown. The ribs G G2 are connected to each other by a curved sheet-metal hood or plate, I, conforming to and connecting at its ends with the heads F F2, while a similar curved plate, K, is arranged to connect the ribs H H2, the two plates thus forming segments of a circle, the center of the upper segment being directly above the shaft B, and the center of the lower segment being directly below the shaft B. This arrangement leaves open spaces at the sides of the heads F F2, which are occupied by curved frames L L2, covered with bolting-clothib, either of silk or wire, so that a complete cylinder -is formed around the shaft B, the upper and lower parts of sheet metal and the sides of bolting-cloth. At equal distances Aapart along the inside ot' the plate I ribs or beater-strips c are secured, while similar but smaller beater-strips, d, are arran gedjn front of or are attached to the' bolting-,cloth-covered sides L L2, of any suitable form, size, or distance apart, the drawings showing'them semicircnlar; but anyothersuitable form may be used, their object to be hereinafter explained.

Upon the shaft B, between the heads I1" F2, are hubs M M2, having arms N branching therefrom, and provided with flat metal plates or wings I), connecting the arms of one hub withA those of the other, as shown.y These wings P are formed with perforations cof any suitable size, form, ordistancc apart, as hereinafter explained.

R is a spout or feed-trough around the shaft B, and fitting-through the heads C2 F2and with a feed-hopper, R2, leading into its outer end, as shown. Y

' g is a collar attached to the shaft B inside the trough It', and provided with curved spiral wings IL' [i2 npon'either side, the sweep of the wings being the same asthe interior diameter ofthe trough It', so that a screw-feed is formed to force the'material from the hopper R2 into the cylinder.A By this arrangement, also, the material will cease running just as volving, as the wings, when stationary, serve as stops7 to the material, so that feeding will only occur when the machine is running.

In the process of milling,a large percentage of middlings and flour becomes crushed into and caused to adherc'tenaciously to the bran, so that theycannot be separated by ordinary reels or screens, and to separate this material into its component parts is the object of my invention. The material, in this mingled condition, is fed into the cylinder through the feed mechanism It l1. h2, as before described, where it is caught by the rapidly-revolving beaters P and thrown around with considerable force against the interior of the cylindrical casing. Some portions of the middlings and ICO lour will be forced out through the boltingcloth b ibut the larger portion requires to be thrown repeatedly against the beater-strips c to break the particles of middlings and our loose from the bran, this being the object ot' these beater-strips. beaters P also greatly aid'in this work, as they form just so many additional sharp edges to act upon the material. As soon as the middlings are loosened from the bran and pulverized fine enough to pass through the boltingclothv b they will do so, and fall into the screwconveyer C6 and be carried off, while the coarser particles ofbran will escape from the spout. rlhe material as it is rapidly carried around the inside of the casing is thrown outward, and if the ribs c were not present a mere layer of the material would be formed against the casing and held in that position by the centrifugal force of the air-current produced by the wingsl; but these ribs serve to break the material up into uneven shape, so that'none ot' it becomes .lixed in one position, but every separate particle comes in contact at some time with the beaters l? or the ribs c.

rIhe ribs d on the bolting-cloth b serve the same purpose as the ribs c, but in addition thereto serve to keep the cloth free from clogging by breakin g the material up into a spraylike form, as shown at m in Fig. 4, so that none of the particles can bec-ome pressed against the cloth to choke it up, but will be forcedloosebythebeatersPsweepingitagainst the ribs d.

In Fig. 5 is shown an outline view of portions ofthe two plates I K and the beaters P, with their arms N and hub M',- antl the shaft B,illustratingavariation in theirconstruction, consisting in placing the center t of the shaft B below the center t2 of the heads F F2, whereby the beaters I approach the segment K nearer than they do the segment I, so that all theinaterialwill be swept from-the segment K, and at the same time the vbeaters I prevented from running too close to the ribs c. The tendency of the material is to t'all upon .the segment K, and unless it is thus swept oftl it is likely to bank or remain thereon; but by this arrangement no banking can occur.

The inner surfaoesot' the sheet-metal seg- .ments I and K will be covered with canvas or other suitable fabric, where the metal is exposed, to keep the middlings and tlour from coming in contact therewith, as the metal has a tendency to discolor them.

The perforations e in the,

The ribs d will be either attached to the bolting-cloth b or secured to the frames L L2 across its face, and may be made of leather, wood, or other suitable substance.

The frames L L2 are made removable, as shown, by buttons n and dowels or pins a2, or in any other suitable manner, so that the cloth may be renewed or the interior of the cylinder reached. By providing a number of these frames Ll L2, covered with different grades 0r numbers of cloth, the machine may be easily and quickly adapted to different kinds of material.

What I claim as new isl. In a separator, a fixed cylinder constructed with a closed top and bottom, and boltingcloth sides, with beater-strips d on the inside thereof, in combination with a revolving beater, substantially as set forth.

2. In a separator, a fixed cylinder constructed with bolting-cloth sides, a closed top, I, a fabric covering the inside otI the top, and beaterstrips in front thereof, in combination with a revolving beater, substantially as set forth.

3. In a separator, a fixed cylinder constructed with a closed top, I, beater-strips o, a closed bottom, K, open sides covered withboltingcloth 11, and beater-strips d in front thereof, in combination with a revolving beater, substantiallyas set forth.

4. In a separator, a fixed eylinderconstructed With closed top I, strips c in front thereof, a closed bottom, bolting-cloth sides, and strips d, smaller than strips c, in front of the boltingcloth, in combination with a revolving beater, substantially as set forth.

, 5. In a separator, a ixed cylinder constructed with a closed top, beater-strips c in front ot' said top, a closed bottom, bolting-,cloth side strips, d, on the inside of said cloth, and a discharge-spout, i, next to the closed bottom, in combination With revolving beater, substantially as set forth. p

6. In a separator, a cylinder composed ot' heads F F2, ribs G" Gr2 H. H2, plates I, strips c, plate K, connecting ribs H H2, bolting-cloth sides b, and strips d, in combination with a revolving beater, substantially as set forth.

In testimony whereof I have hereunto set my hand in the presence ot' two subscribing witnesses ALBERT DELLOSS BELLINGER.

Witnesses: v

U. N. WooDwARD, LoUIs FEEsER. 

